Tone-modulator for graphophones.



E. ONEEL & E. JENKINS.

TONE MODULATOR FOR GRAPHOPHONES.

APPLICATION FILED MAY 29, 1908.

Patented Dec. 1, 1908.

witnesses t-rmrrnn s'rA Es PATENT arias.

JESSE E. ONEEL AND EUGENE JENKINS, OF TILLAMOOK, OREGON.

'ronn-monura'ron m GRAJPHOPHONES.

Specification of. Letters Patent.

Patented Dec. 1, 1908.

Application filed M21129, 1908. Serial No. 135,774.

To all whom it may concern:

Be it known that we,-Jnssn E.-""O Nnnn and EUGENE JENKINS, citizens of the United States, residing at Tillamook, in the county of Tillamook, State of Oregon, have invented certain new and useful Improvements in Tone-Modulators for Graphophones; and we do hereby declare the followin to be a full, clear, and exact description the in- 7 pensive, and eflicient device adapted for at-.

vention, such as will enable others skilled in the art'to which it appertains to make and use the same.

The present invention relates to improvements in tone-modulating devices for graphophones, and it resides, generally, in the provision of an extremely simple,inextachment to a. sound-box of. any ordinary type and including a pair of oppositely-disposed jaws movable intoand out of engagement with the vibrating transmitter-bar of the sound-box, so as to control the ampliings, 1 designates a sound-box of "any ordi-.

v 'tude of i the vibrations.

naryconstruction, 2 the mica diaphragm thereof, 3 the needle holder, and Mlle vibratory transmitter bar which is connected at -its lower end with said holder and at its upper end with the diaphragm in the usual manner. I

The-modulator which is designed for use in connection with-the sound box comprises a supporting strap 5 provided at each end with a lateral flange 6 having a central perforation formed therein through which an adjusting screw 7 extends, the inner end of each screw impinging against an arcuate lateral flange formed upon the outeredge of a slide 8, said slides being. movable upon the ends of the strap with which they are engaged by means of pairs of ears 9 which 'said rod is extend across the upper and lower edges of the strap and are bent towards each other as shown, the movement of the slides in one direction being limited by the contact of their upper ears with the shoulders 10 re-.

sultant from the formation of the V-shaped -bend 11 intermediate the ends of the strap.

The supporting strap further includes an inte ral tongue 12 which forms an extension of the bend'll and has its major portion arranged in spaced relation to and parallel space between the tongue and the strap is fitted apair of oppositely-disposed jaws 13 pivoted intermedlate their ends'as indicated by the numerals 14, 14, the pivot pins pass-' ing through the tongue and through the strap. Towards their lower ends, the jaws are connected by means of'a. pm. 15 whose opposite ends fit in aliningsocketsformed inthe inner or mutually-ad acentedges of the jaw, said pin being embraced by a'tiny' ex pansible coil spring 16, the tension-of Whichnormally forces the lower ends of the jaws.

away from each other. The lower ends of the, jaws are; forced towards each other against the action ofthespring by means of an endwise movable threaded ,rod 17 which extends through an opening formed in the laterally-bent upper end of the tongue and has its tapered or wedge-shaped lower end fitted between the upper ends of said jaws. The'upper end of provided with a milled head 18,

by means 0 which it is rotated, the inward movement of said rod efiected'by its rotation in one direction causing its lower end to advance between the upper ends of the jaws,

forcing said ends away from. each other, in consequence of which the lower ends of the jaws will approach each other. a i

In attaching the device to the sound-box, a the slides 8 are tightened against the side wall thereof, by means of the screws 7, the laterally-bent upper end of the transmitterbar passing between the inner edges of the jaws which as above stated, are normally forced away'frorn each other by t'he coilspring 16. When it is desired to modulate the sound-vibrations, the'rod 17 is moved inwardly, whereupon the lower ends of the jaws will be forced into contact with the transmitter bar at. op osite sides thereof, the inward movem'e'nflo 'said rod being con- 65 with the front face of the strap. In the tinned, until the requisite ressure is exerted ed for upon said bar, the tone so tening as the tension upon the bar increases.

The strap and the slides are preferably constructed of brass and the jaws of aluminum, the latter metal imparting a peculiarly soft tone to the instrument upon which it is placed and permitting a more gradual modulation of the tone.

If preferred, each jaw may have secured to the lower edge thereof a thin facing or cushion of rubber 20.

It will be apparent from the foregoing, that the tone regulation is at all times under the control of the operator, the changes in tonevbein effected merely by a rotation of the contro lingrod 17 in one direction or the other, without necessitating the stopping of the instrument. It will likewise be apparent that by reason of the simplicity of the device, it may be constructed at an extremely low cost.

What is claimed is:

1. The combination, with the sound-box of a graphophone, and its transmitter -bar, of a tone-modulator, comprising a sup ort adapted for attachment to the soundox, and a pair of oppositely-disposed members carried by the support and movable into and out of engagement with the transmitter-bar.

2. The combination, with the sound box of a graphophone, and its transmitter-bar,

of a tone-modulator, comprising a support adapted for attachment to the sound-box, and a pair of oppositely-disposedmembers carriedby the support an movable simultaneously into and out of engagement with the transmitter-bar.

3. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising a su port adapted for attachment to the soun -box, and a pair of oppositely-disposed jaws pivoted to the support and movable into and out of engagement with the transmitter-bar.

4. The combination, with the sound box of a graphophone, and its transmitter bar, of a tone-modulator, comprising a support adapted for attachment to the sound-box, and a pair of oppositely-disposed jaws pivoted to the support and movable simultaneously into and out of engagement with the transmitter-bar.

5. The combination, with the sound box of a graphophone, and its'transmitter-bar,

of a tone-modulator, comprising a support adapted for attachment to the sound-box, and a pair of transverselymlisposed members carried by the support and arranged upon opposite sides of the transmitter-bar, said members being movable into and out of en gagement with said bar.

6. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising a support adaptattachment to the sound-box, and a pair of transversely-disposed members pivj oted to the support and arranged upon 'opj posite sides of the trans1nitter-bar,sa1d members being movable into and out of engagement with said bar.

7. The combination, with the sound box of a graphophone, and its transmitterbar, of a tone-modulator, comprising a su port adapted for attachment to the soun -box, and a pair of transversely-disposed members carried by the support and arranged upon opposite sides of the transmitter-bar, said members being movable simultaneously into and out of engagement with said bar;

8. The combination, withathe sound box of j a graphophone, and its transmitter-bar, of a j tone-modulator, comprising a support ada t-' ed for attachment to the sound-box, and e vices carried by said support and arranged upon opposite sides of the transmitter-bar, for engagement with said bar.

9. The combination, with the sound box of I a graphophone, and its transmitter-bar, of a F tone-modulator, comprising a support adapts ed for attachment to the soundbox, a pair of jaws carried by the support and arranged for engagement with the transmitter-bar, and means for adjusting the tension of said jaws upon said bar.

10. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising a support adapted for attachment to the sound-box, a pair of jaws pivoted to the sup ort and arj ran ed upon opposite sides of t 1e transmitterar, for engagement therewith, and means for adjusting the tension of said jaws upon said bar.

11. The combination, with the sound box of a gra-phophone, and its transmitter-bar, of a tone-modulator, comprising a support adapted for attachment to the sound-box, a pair of jaws pivoted to the support and arranged upon opposite sides of the transmitter-bar, for engagement therewith, and endwise-movable means for adjusting the tension of said jaws upon said bar.

12. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising a support adapted for attachment to the sound-box, a pair of jaws pivoted to the support and arran ed upon opposite sides of the transmitter-bar, for engagement therewith, and an endwise-movable member carried by said support and engaged with, said jaws, for adjusting the tension of said jaws upon said bar.

13. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tonermodnlator, comprising a support adapted for attachment to the sound-box, a pair of jaws pivoted intermediate their ends to the support and arranged upon opposite I adapted for attadl sides of :thetransmitter-bar, andan endwi'see tendingbetween the a jacent ends of-said jaws, for'forcin'g the otherends-of the latter into engagement with said bar.

- 14..The combination, with thesoundbox of a graphophone, andrits transmitter b'ar, of a tone-modu atxor, comprising a support ent to. the sound-box, a pair of jaws pivote intermediatetheir ends to the support and arranged upon oppositesides of the transmitter-bar, and an endwisemovable member havin a tapered end extending between the a jacent ends of said 'aws, for forcing the other ends of the latter 1nto engagement with said barQ 15. The combination, with the sound box I of a graphophone, and its transmitter-bar,

. to the support and arranged upon opposite of a tone-modulator,comprising a support adapted for attachment to the soun -box, a

. pair of jaws pivoted, intermediate t ei ends to the support and arranged upon opposite sides of the transmitter har, and an endwisemovable rotatable member having a tapered end extending between the adjacent ends of said jaws, for forcing the other ends of the latterinto engagement with'said bar.

' 16. The combination, with the sound box of a .graphophone, and its tiansmitter-bar,

of a graphophone, and its transmitter-bar,

of a tone-modulator, comprising a support adapted for attachment to the sound-box, a pair of jaws pivoted intermediate their ends side's of'the transmitter-bar; means for normally forcing the lower ends of the jaws away from each other and fromthe bar; and

means arranged for engagement with the upper end of said jaws to force said lower ends towards each other and into engagementwith saidbar, against the action of the first-mentioned means. a

17 The combination, with the sound box of a graphophone, and its, transmitter-bar, of a tone-modulator, comprising asupport adapted for attachment to the sound-box, a pair of jaws pivoted intermediate their ends to the support and arranged upon opposite sides of the transmitter-bar; means for normally forcing the lower ends of the jaws away from each other and from the bar, and the upper ends thereof towards each other; and an endwise-movable member having its lower end fitting between the upper ends of said jaws, for forcing the same away from each other and the flower ends/thereof towards each other and into engagement with of a graphophone, and its transmitter-bar,

of a tone-modulator, comprising a support adapted for attachment to the sound-box, a pair of jaws pivoted intermediate their ends to the support'and arranged upon opposite sides of the transmitter-bar; means for of a tone-modulator, comprising a sugport' normally forcing the lowerends ,of the jaws, away "fnomeach other and from the bar, and- ,theeupper ends-thereof towards each other; andan-endwise-movable member having a tapered lower end fitting between the upper ends of said jaws, for forcing the-same away from each other and the lower ends thereof towards each other and into engagement with said bar, against the action of the firstmentioned means.

19. The combination,with the sound box of a' graphophone, and its transmitter-bar, ofa tone-modulator, comprising a support adapted for attachment to. the sound-box, and a' pair of oppositely-disposed members carried by the support and movable into and out of engagement with the transmitter-bar, each member being provided with a facing of yielding material.

20. Thecombination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising a support adapted for attachment to the, sound box, and a pair of oppositely-disposed members carried by the support and movable into and-out ofv engagement with the transmitter-bar, each member being provided with a facing of rubber.

21. The combination, with the sound box of a tone-modulator, comprising a sup ort adapted 'for attachment to the soundox, and a pair of oppositely-disposed jaws pivoted to the support and movable into and out of engagement with the transmitter-bar, each jaw being provided with a facing of yielding material.

22. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising-a sup ort adapted for attachment to the soundox, and a pair of oppositely-disposed jaws pivoted to the support and movableinto and out of engagement with the transmitter-bar, each jaw being provided with a facing of rubber.

23. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising a support adapted for attachment to the sound-box,

and gripping means carried by the support and arranged for engagement with the transmitter-bar.

24. The combination, with the sound box of a graphophone, and its transmitter-bar, of a tone-modulator, comprising a support adapted for attachment to the sound-box,

gripping means carried by the support and arranged for engagement with the transmitter-bar; and means for adjusting the tension of said gripping means uponsaid bar.

25. Thecombination, with the sound box of a graphophone, and its transmitter-bar,

adapted for attachment to the soun ox,

e eeeme and gripping means carried by the support I and arranged for engagement with the trans- :tnd arranged for engagement with the transmitter-bar, the gripping edges of said means mitter-bar, the gripping edges of said means heving a facing of rubber secured thereto. having am facing of yielding material secured In testimony whereof, We ei'fix our signathereto. tures in presence of two Witnesses.

26. The combination, With the sound box JESSE E. QNEEL.

of a graphophone, and its transmitter-bar, EUGENE JENKINS. of a tone-modulator, eomprisinga support Witnesses adapted for attachment to the sound-box,

WESLEY RUSH,

10 and gripping means carried by the support I A. Vi. SEVERANCE. 

